Unfamiliar with the subway system -- no doubt because it was designed by Hell's own puzzlemaster -- he found himself deposited three miles away from his destination. He decided to walk the rest of the way. At 11:40 p.m., local residents heard arguing, followed by gunshots. Henryk suffered a bullet to his lung, then staggered to a nearby house and rang the doorbell ... that the occupants didn't answer because of the gunshots they just heard. He collapsed in the street and died before help could reach him.
Police arrived on the scene, but there was such a severe lack of manpower and equipment that they could only spare a single detective with a Polaroid camera -- which is a perfectly fine setup for, say, attending a wedding, but not ideal for, say, solving murders. The detective was accompanied by a forensic team that specialized in burglaries and other non-fatal crimes, so they were woefully out of their depth from the start.
Oh, and they had no lights to work under, and therefore had to rely on flashlights. Honestly, it's amazing the police made it out of there alive.
In the end, they were unable to turn up a single lead in the case -- no witnesses, no evidence, and no obvious perpetrators. They're still trying, with a $12,000 reward for any information about the murder. But while time may heal all wounds, it does approximately dick for criminal apprehension.